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High sensitivity microsensor assisted by Fano resonance in InSb based terahertz plasmonic waveguide

Liu Huaiqing, Zhong Shuomin, Xu Gaoming

Optica Applicata

2019

Vol. 49, nr 4

585--596

We propose a compact terahertz plasmonic structure comprising an InSb-dielectric-InSb waveguideside-coupled with two stub resonators. Due to the coherent interference of the splitting discrete andquasi-continuum modes, the reflection spectrum possesses a sharp asymmetric Fano resonance dip, which stems from the phase difference between the two stub resonators. Owing to the permittivity temperature dependent property of InSb, the Fano resonance dip can be actively controlled by tuning temperature. The physical features contribute to a highly efficient plasmonic sensor for both refractive index and temperature sensing. The microsensor yields a sensitivity of ̴2.9 THz/RIUand 1.8 × 10–3 THz/°C. This multiparameter high sensitivity microsensor may find important applications in medical sensing, biosensing and on-chip sensing working in terahertz region.

Four-Layer Ontology Model for Automation of MEMS Synthesis

Vasyliuk I., Teslyuk V., Kernitsky A., Denysyuk P.

Machine Dynamics Research

2011

Vol. 35, No. 3

79-86

In the paper the four-layer ontology model for automated design of microelectromechanical systems is proposed, and the peculiarities of every level are described.

Sol-gels microoptic for biomedical and environmental measurements

Podbielska H.

Biocybernetics and Biomedical Engineering

2002

Vol. 22, no. 4

149-159

The advantages of sol-gel biomaterials as host matrices for various dopants are pointed out. The role of optode as a transducer of external signal to the detecting unit is discussed in this light, explaining the term of an integrated sensing system. Various sensors with bulk or film sol-gel optodes are presented, with a special emphasis on oxygen and urea sensors. The advantages of sol-gel microsensors are discussed, as well.